Arch Linux

There seems to be a dependency or build problem with kdenlive/mlt. I have a rather freshly installed system. I installed kdenlive and started it and get the following output:

$ kdenlive
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltjackrack.so
(libjack.so.0: cannot open shared object file: No such file or directory)
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltsdl.so
(libSDL_image-1.2.so.0: cannot open shared object file: No such file or directory)
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltsox.so
(libsox.so.3: cannot open shared object file: No such file or directory)
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltvidstab.so
(libvidstab.so.0.9: cannot open shared object file: No such file or directory)
Segmentation fault (core dumped)

After installing jack2 and sdl_image kdenlive starts.
$ kdenlive
No LADSPA plugins were found!

Check your LADSPA_PATH environment variable.
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltsox.so
(libsox.so.3: cannot open shared object file: No such file or directory)
mlt_repository_init: failed to dlopen /usr/lib/mlt/libmltvidstab.so
(libvidstab.so.0.9: cannot open shared object file: No such file or directory)
kf5.kxmlgui: Registering action "edit_select_all" under new name "select_all_tracks"
libDeckLinkAPI.so: cannot open shared object file: No such file or directory
QCoreApplication::postEvent: Unexpected null receiver
detected format: YUV 4:2:2 (YUYV): YUYV
....

Additional info:
* package version:
kdenlive 15.04.0-1
mlt: 0.9.6-5

Steps to reproduce:
* Install kdenlive on a fresh system
* start kdenlive